Mold on scorpion

I noticed a little mold spore in the enclosure I just switched a babicurus jacksoni to and as I was removing it I saw a little white mark on the scorpions tail. Could the mold have moved onto the scorpion? A little background its a juvenile, just moved it into the new enclosure a week ago and it ate two days ago. The substrate is a coco fiber mix and is kept moist but not wet and when I did spray I sprayed the sides. I plan on adding more ventilation tomorrow and letting the substrate dry out before I mist again. Thanks for the help!